<template>
	<view class="goods-item">
	  <!-- 商品左侧图片区域 -->
	  <view class="goods-item-left">
      <!-- 勾选状态 goods_state；  定义click事件，向组件使用者暴露 radio-change 事件，监听勾选状态的改变 -->
      <radio :checked="goods.goods_state" color="#c00000" v-if="showRadio" @click="radioClickHandler"></radio>
      <!-- 图片 -->
	    <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
	  </view>
	
	  <!-- 商品右侧信息区域 -->
	  <view class="goods-item-right">
	    <!-- 商品标题 -->
	    <view class="goods-name">{{goods.goods_name}}</view>
	    <view class="goods-info-box">
	      <!-- 商品价格 -->
	      <view class="goods-price">￥{{goods.goods_price | tofixed}}</view>
        <!-- 商品数量加减组件 -->
        <uni-number-box :min="1" :value="goods.goods_count" v-if="showNumber" @change="numChangeHandler"></uni-number-box>
	    </view>
	  </view>
	</view>
</template>

<script>
	export default {
		name:"my-goods",
    props: {
      // 需要渲染的数据
      goods: {
        type: Object,
        default: {}
      },
      
      // 是否展示单选组件
      showRadio: {
        type: Boolean,
        default: false
      },
      
      // 是否展示数字输入框
      showNumber: {
        type: Boolean,
        default: false
      }
    },
		data() {
			return {
				defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png' // 默认的空图片
			}
		},
    
    methods: {
      // 向组件使用者传递 num-change 事件，同时携带参数
      numChangeHandler (value) {
        this.$emit('num-change', {
          // 商品ID
          goods_id: this.goods.goods_id,
          // 最新购买数量
          goods_count: value
        })
      },
      
      // 向组件使用者传递 radio-change 事件，同时携带参数
      radioClickHandler () {
        this.$emit('radio-change', {
          // 商品 ID
          goods_id: this.goods.goods_id,
          // 商品最新的勾选状态
          goods_state: !this.goods.goods_state
        })
      }
    },
    
    filters: {
      // 处理价格过滤器
      tofixed (num) {
        return Number(num).toFixed(2)
      }
    }
	}
</script>

<style lang="scss">
.goods-item {
  display: flex;
  padding: 10px 5px;
  border-bottom: 1px solid #f0f0f0;
  .goods-item-left {
    margin-right: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    .goods-pic {
      width: 100px;
      height: 100px;
      display: block;
    }
  }
  .goods-item-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    .goods-name {
      font-size: 13px;
    }
    .goods-info-box {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .goods-price {
      font-size: 16px;
      color: #c00000;
    }
  }
}

</style>
